January 1950 – vol. 43, issue 1–4 (Fair Isle Bird Observatory) IT IS well-known from the work of Makkink (1942) and Edwards et al. (1948) that in certain situations the Oyster-catcher (Hcematopus ostralegus) adopts a " pseudo-sleeping " attitude. The bird stands on one or both legs, with the bill plunged into the scapulars, closely simulating the normal resting pose of wading-birds, but the eyes remain wide open and the bird is obvi... This article is only available to registered users.To read more, please log in or purchase a subscription.